1109516728877 has 2 divisors, whose sum is σ = 1109516728878. Its totient is φ = 1109516728876.

The previous prime is 1109516728849. The next prime is 1109516728897. The reversal of 1109516728877 is 7788276159011.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1107238480516 + 2278248361 = 1052254^2 + 47731^2 .

It is a cyclic number.

It is not a de Polignac number, because 1109516728877 - 2¹⁰ = 1109516727853 is a prime.

It is a super-2 number, since 2×1109516728877² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1109516728897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 554758364438 + 554758364439.

It is an arithmetic number, because the mean of its divisors is an integer number (554758364439).

Almost surely, 2^{1109516728877} is an apocalyptic number.

It is an amenable number.

1109516728877 is a deficient number, since it is larger than the sum of its proper divisors (1).

1109516728877 is an equidigital number, since it uses as much as digits as its factorization.

1109516728877 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11854080, while the sum is 62.

The spelling of 1109516728877 in words is "one trillion, one hundred nine billion, five hundred sixteen million, seven hundred twenty-eight thousand, eight hundred seventy-seven".